Uzbekistan powerhouse Ergashev returns to BoxNation against Adrian Estrella (29-4, 24 KOs).
In the unpaid ranks the southpaw had a 202-14 record, and as a professional he's blitzed through his opposition with nine of his 17 wins coming in the opening round.
Last February he was taken the distance by Mykal Fox – who had a five-inch height advantage – and was forced to display his boxing ability in the unanimous decision win. He added another stoppage to his impressive record in August when hammering Abdiel Ramirez in four rounds.
Both Ergashev and Shishkin are coached by Javan 'Sugar' Hill, the nephew of Hall-of-Fame trainer Emanuel Steward and new trainer of Tyson Fury.
Ergashev is currently ranked at six with both the WBA and IBF, and with unified World Champions Josh Taylor and Jose Ramirez hoping to clash this year before possibly moving up in weight, the division could be wide open in 12 months' time.